Electronic apparatus having a main body on which a display device is placed

1. An electronic apparatus comprising: a box-shaped hollow cover including a bottom plate, a top plate, and a pair of upright plates extending between the bottom plate and the top plate, the cover having a first opening at one end and a second opening at another end, and the top plate having a plurality of depressions; a frame having a plurality of built-in function parts, the frame being slidably supported by the cover and being removably inserted into the cover through the first opening; and flange portions formed at an edge portion of the bottom plate, an edge portion of the top plate, and edge portions of the upright plates, and the flange portions projecting from the edge portion of each of the plates into the second opening.

2. An electronic apparatus according to claim 1 , wherein the frame includes a latch device adapted to be releasably caught by the cover when the frame is held inside the cover, the latch device includes a latch piece, capable of being displaced between a locking position in which the latch piece is caught by the cover and an unlocking position in which the latch piece is disengaged from the cover and urged toward the locking position, and a release button for pressing the latch piece toward the unlocking position.

3. An electronic apparatus according to claim 2 , wherein the frame includes a decorative panel adapted to close the first opening when the frame is held inside the cover, the latch piece is covered by the decorative panel, and the release button is incorporated in the decorative panel.

4. An electronic apparatus according to claim 1 , wherein the flange portions abut against the frame to regulate positions of the cover and the frame when the frame is inserted into the cover through the first opening.

5. An electronic apparatus according to claim 1 , wherein the frame includes a base plate overlapping the bottom plate and a pair of side plates rising from an edge portion of the base plate and overlapping the upright plates, and the function parts are located in a region surrounded by the base plate and the side plates.

6. An electronic apparatus according to claim 1 , wherein the frame supports a plurality of connectors, and the connectors are exposed outside of the cover through the second opening when the frame is inside the cover.

7. An electronic apparatus comprising: a box-shaped hollow cover including a bottom plate, a top plate, and a pair of upright plates extending between the bottom plate and the top plate, and the cover having a first opening at one end and a second opening at another end, and the top plate having a plurality of depressions; a frame having a plurality of built-in function parts, the frame being slidably supported by the cover, and being removably inserted into the cover through the first opening; and flange portions formed at an edge portion of the bottom plate, an edge of the top plate, and edge portions of the upright plates, and the flange portions projecting from the edge portion of each of the plates into the second opening; a pair of latch pieces supported by the frame, the latch pieces being movable between a locking position in which the latch pieces are caught by one end of the cover and an unlocking position in which the latch pieces are disengaged from the one end of the cover, and being urged toward the locking position; a panel supported by the frame, the panel covering the latch pieces, and closing the first opening of the cover when the frame is inside the cover; and release buttons which are supported by the panel, the release buttons pressing the latch pieces from the locking position toward the unlocking position.

8. An electronic apparatus according to claim 7 , wherein the flange portions abut against the frame to regulate the positions of the cover and the frame when the frame is inserted into the cover through the first opening.

9. An electronic apparatus according to claim 7 , wherein the panel has side faces that extend along the upright plates of the cover when the frame is inside the cover, and the release buttons are placed on each of the side faces.

10. An electronic apparatus according to claim 7 , wherein the frame supports a plurality of connectors, and the connectors are exposed outside of the cover through the second opening when the frame is inside the cover.

11. An electronic apparatus comprising: a box-shaped hollow cover made of a steel sheet, the cover including a first opening at one end, a second opening at another end, a bottom plate, a reinforced top plate, a pair of upright plates extending between the bottom plate and the top plate, and a pair of first leg portions having decorative portions exposed along the upright plates; a frame having a plurality of built-in function parts, the frame being slidably supported by the cover, and being removably inserted into the cover through the first opening, the frame including a panel having side faces, the panel closing the first opening when the frame is inside the cover, and the panel including a pair of second leg portions having decorative portions exposed along the side faces; and a latch device for holding the frame inside the cover, the latch device being adapted to be releasably caught by the cover when the frame is held inside the cover.

12. An electronic apparatus according to claim 11 , wherein said latch device includes a pair of latch pieces, supported on the frame so as to be displaced between a locking position in which the latch pieces are caught by the cover and an unlocking position in which the latch pieces are disengaged from the cover and urged toward the locking position, and release buttons for pressing the latch pieces toward the unlocking position, the release buttons being incorporated in the decorative portions of the second leg portions.

13. An electronic apparatus according to claim 11 , wherein the top plate of the cover has a plurality of depressions for reinforcement, and flange portions are formed at an edge portion of the bottom plate, an edge portion of the top plate, and edge portions of the upright plates, and wherein the flange portions are projected from the edge portion of each of the plates into the second opening.

14. An electronic apparatus according to claim 13 , wherein the flange portions abut against the frame to regulate the positions of the cover and the frame when the frame is inserted into the cover through the first opening.

15. An electronic apparatus comprising: an external device; a main body including a plurality of function parts built-in, the main body comprising a box-shaped hollow cover formed of a steel sheet, and a frame held inside the cover, which is to be drawn out of the cover and which supports the function parts, the cover including a top plate on which the external device is placed and a plurality of depressions are formed for reinforcement, and the cover having strength such that the cover maintains the shape of a box even when the external device is placed on the top plate; and a latch device for holding the frame inside the cover, the latch device including a latch piece, capable of being displaced between a locking position in which the latch piece is caught by the cover and an unlocking position in which the latch piece is disengaged from the cover and urged toward the locking position, and a release button for pressing the latch piece toward the unlocking position.

16. An electronic apparatus according to claim 15 , wherein said cover includes a bottom plate opposed to the top plate and a pair of upright plates extending between the bottom plate and the top plate, said frame includes a base plate overlapping the bottom plate and a pair of side plates rising from an edge portion of the base plate and overlapping the upright plates, and said function parts are located in a region surrounded by the base plate and the side plates.

17. An electronic apparatus according to claim 15 , wherein said cover has an opening at one end thereof through which the frame is loaded and unloaded and a stopper portion at the other end opposite from the opening, the stopper portion being adapted to abut against the frame to regulate the respective positions of the cover and the frame when the frame is inserted into space inside the cover through the opening.

18. An electronic apparatus comprising: a main body including a plurality of function parts built-in, the main body comprising a box-shaped hollow cover including a first opening at one end and a second opening at another end, and the main body including a frame which is held inside the cover, which is to be drawn out of the cover through the first opening, and which supports the function parts, wherein the cover includes a bottom plate having a plurality of guide ribs extending linearly in the pullout direction of the frame, a top plate on which an article is placed, and a pair of upright plates extending between the bottom plate and the top plate, and the cover has strength such that the cover maintains the shape of a box even when the article is placed on the top plate, and wherein the frame supports at least one connector exposed outside of the cover through the second opening, and the frame includes a base plate overlapping the bottom plate and slidably in contact with the guide ribs and a pair of side plates including a plurality of protrusions which protrude from the base plate, overlap with the upright plates, and are in slidable contact with the upright plates.

19. An electronic apparatus according to claim 18 , wherein said cover includes a stopper portion at the another end thereof facing the second opening, the stopper portion being adapted to abut against the frame to regulate the respective positions of the cover and the frame when the frame is inserted into the space inside the cover through the first opening.